in interview i have faced this question.
question: I have 200 servers they are connected to 20 layer2 access switches (each server connected to two switches for redundancy)
20 layer2 access switches are connected to 2 layer3 distribution switches. (each access switch connected to two distribution switches)
2 layer3 switches are connected to two routers, where each router is connected to one ISP.( each distribution switch connected to two routers)
If I want no single point of failure in the network, what are the protocols to be used on each device?
on access switches?
on distribution switches?
on edge routers?